Do you know birthday boy Bono's full name? How about Adele's? This site reveals the full names of 26 celebrities who only use one name.

Number to Know

9: Total years Winston Churchill spent as prime minister of Great Britain. He became prime minister on this date in 1940 after Neville Chamberlain received a vote of no confidence from Great Britain's House of Commons. He served two separate terms.

This Day in History

May 10, 1864: Jefferson Davis, president of the Confederate States of America, is captured by Union troops.